optimize.js

router.get('/', function(req, res, next) {
  models.Blog.findAll({
    where: {
      published: true
    },
    limit: 3,
    order: [["createdAt","DESC"]],
    include: [
      { model: models.Photo }
    ]
  }).then(function(blogs) {
    return models.Project.findAll({
      where: {
        published: true
      },
      limit: 4,
      order: [["createdAt","DESC"]],
      include: [
        { model: models.Photo }
      ]
    }).then(function(projects) {
      return [blogs, projects];
    });
  }).spread(function (blogs, projects) {
    return res.render('index', {
      blogs: blogs,
      projects: projecten
    });
  }).catch(function(err) {
    res.json({error: err});
  });
});